I would suggest asking that question on GameFAQ's community. Someone should probably have the answer there.
But don't we have a bunch of GameFAQ posters here?
Not that its important or anything, just idle curiosity on my part. I was just amused by the fact that Squeenix actually addressed this otherwise glaring issue from the original game, even if the solution doesn't seem all that elegant (because I do know that it drops from the Mantis Ant boss, who unfortunately is the last boss prior to Dime Tower, which is the final point of no return to the Overworld, which makes the addition kinda redundant by that point anyways; it also supplants the Dragon
Sword as the game's penultimate weapon and I was merely curious as to whether the stats/abilities reflected as such, and if so, by how much).